Jean is D'Artagnan's loyal servant and close companion, a character of lower social standing than the musketeers. He consistently demonstrates kindness and compassion, forming a strong bond with D'Artagnan. Their relationship is mutually respectful, contrasting with the dismissive dynamic between D'Artagnan and his original servant, Planchet, from Alexandre Dumas's novel. Jean actively participates in adventures alongside D'Artagnan, Constance Bonacieux, and the musketeers Athos, Porthos, and Aramis. His presence portrays D'Artagnan in a more consistently honorable and humble light within the adaptation, humanizing him and emphasizing traits of equality and care in their interactions. Jean remains a consistent, supportive figure embodying loyalty, highlighting class dynamics through his relationship with D'Artagnan.